Security Engineer, Full Stack

Responsibilities

• Own security across application code, AWS/GCP cloud infrastructure, Kubernetes workloads, identity and authorization, networking, and factory-floor operational technology.
• Build AI-driven security checks, agentic tooling, paved-road patterns, guardrails, SDKs, CLIs, and other automation that makes secure practices the default.
• Assess unfamiliar systems and manufacturing environments, identify risks, and design controls suited to Hadrian’s operating model.
• Implement practical, auditable controls for CMMC 2.0, NIST 800-171, and ITAR requirements.
• Investigate and contain security incidents, drive them to resolution, and implement systemic improvements.
• Establish security standards, best practices, and tools as a founding member of the security team.
• Potentially mentor and grow future security engineers and set technical direction.

Requirements

• 4+ years of experience in security engineering, software engineering, or infrastructure/platform engineering with hands-on security ownership.
• Ability to write code in Go, Python, or a similar language and build security tooling, guardrails, SDKs, CLIs, and automated checks.
• Familiarity with agentic systems, agentic loops, task delegation, LLM agents, and automation.
• Breadth across application security, cloud and Kubernetes security, identity and authorization, and networking.
• Ability to work independently on under-specified problems, make decisions under uncertainty, and learn unfamiliar systems quickly.
• Ability to balance risk reduction with innovation and evaluate whether security controls or processes should be retired.
• Preferred experience administering or migrating GCC High.
• Preferred security experience in manufacturing or operational-technology environments.
• Preferred familiarity with ITAR/EAR and CUI marking and handling requirements.
• Ability to mentor and grow a team is preferred.
• Must be a U.S. citizen, lawful permanent resident, protected individual, or eligible to obtain required U.S. Department of State authorizations under ITAR requirements.

Benefits

• Medical, dental, vision, and life insurance plans are available for full-time employees.
• 401(k) plan.
• Relocation support may be provided in certain situations based on business need.
• Flexible vacation policy.
• Equity.